Number of nX2 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors.
A199351
Number of nX2 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors.
Terms
- a(0) =1a(1) =1a(2) =45a(3) =105a(4) =4251a(5) =9175a(6) =447916a(7) =958259a(8) =50233308a(9) =106354160a(10) =5897448012a(11) =12409253763a(12) =715649665145
External references
- oeis: A199351